Vinyl resin compositions



Patented Feb. 20, 1945 vnvrr. RESIN comosmons Moycr M. Safi'ord, Schenectady, N.

Y., assignor to General Electric Company, a corporation of New York No Drawing. Application April 26, 1941, Serial No. 390,587

6 Claims. ((1260-36) The present invention relates generally to vinyl resin compositions.

As disclosed and claimed in my copending application Serial No. 339,526, filed June 8, 1940,

now Patent No. 2,269,990, dated January 13, 1942,

and assigned to the same assignee as the present invention, methyl chlor stearates having at least three chlorine atoms in the molecule are excellent plasticizers for polyvinyl halides. These compounds are relatively cheap, give a plasticized product of tensile strength comparable to those polyvinyl halides plasticized with tricresyl phosphate, impart good low temperature flexibility, and are otherwise generally advantageous additions, to polyvinyl halides.

it has been found that in addition to the polyvinyl halides, the products of th conjoint polymerization of vinyl halides with vinyl esters of the lower aliphatic acids, for example the prodnets of copolymerlzation of vinyl acetate may be plasticized with the methyl chlor stearates. Also, the products may be electrically stabilized with the various compounds used to stabilize the polyvinyl halide compositions.

s is illustrated, for example, by the following data obtained from compositions prepared by using a copoleric vinyl resin known as Wlnylite VYNW'which is a product or the conjoint polymerization of vinyl chloride and vinyl vinyl chloride and acetate. Four compositions were prepared using the following plasticizers:

i. Tricresyl'phosphate 2. Methyl trichlorstearate 3. Methyl pentachlorstearate i. Methyl hexachlorstearate 1. Lead oxide 2. Lead hydroxide 3. Lead salt of para tertiary amyl' phenol It wilbbe noted from the following table on initial readings, in every case where the methyl chlor stearates are used,'that the methyl hexa- It will be further noted that in general the ohlorstearate shows the lowest electrical losses.

methyl chlor stearates have lower electrical losses than the comparable tricresyl phosphate coml iositions.

Loss Resin Plasticizer Stabilizer factor Vinylite Tricresyl phos- 96.2

vYNW. phate. Do ..do 2% lead salt are ter- 1.088

tiary amylp enol. Do .do 67 lead hydroxide-. 30.0 Do.-. do 5% litharge-- 1.2a Do Methyl trichlor 91.8

stearate.

2% lead salt are ter- 3. 88

tiary amylp c1101. 67 lead hydroxide 7. 2 do 5% litharge 2. 35 Do. Methyl ponta- 40.4 I

chlor stearate. Do do 2% lead salt are ter- 1.64

tiary amylp enol. Do do 6%lead hydroxide 1.98 Do do 5% litharge 0.773 Do Methyihexachlor 11.32

stearate. Do .do 2% lead salt are ter- 1. 092

tiary amylp enol. Do ..do. 67 lead hydroxide 0.91 Do do 57Zlltharge.. 0.50

cycles, 90 0. loss factor calculated from D.-C. resistivity (p) by means of the equation e 101o p Broadly stated, my invention embraces the plasticization with the methyl chlor stearates of the products of polymerization of any polymeriza'ole composition containing essentially vinyl halide. Thus, in additionto the foregoing, vinyl resin compositions which are the-product of .the conjoint polymerization of vinyl halides and esters of acrylic and methacrylic acids may be employed. Also, vinyl resin compositions dis closed and claimed in thdcopending application Serial No. 367,116, of Gaetano F. DAlelio', filed,

November 25', 1940, now Patent No. 2,299,740, dated October 27, 1942, and assigned to the same assignee as the present invention, may be used. Such compositions are briefly compositions comprising the polymerization product of a polymerizable mixture comprising essentially vinyl halide andan arylalkanol or halo-arylalkanol ester of acrylic acid, e. g., benzyl acrylate or a chlorbenzyl acrylate.

What I claim as new and desire to secure by Letters Patent of the United States is:

1. A composition comprising (1) the product of the conjoint polymerization of vinyl halides and vinyl esters of the lower aliphatic acids and (2) a methyl chlor stearate having at least 3 chlorine atoms in the molecule. v

2. A composition comprising the product of the conjoint polymerization of vinyl chloride and 5. A composition comprising methyl hexachlor stearate and the product of the conjoint polymerization of vinyl chloride and vinyl acetate.

6. A composition comprising, a methyl chlor stearate having at least three chlorine atoms in the molecule, and a vinyl resin which is the product of the conjoint polymerization 01 a, vinyl halide with an ester of the group consisting 01 vinyl esters of the lower aliphatic acids, esters at 10 acrylic acid and esters of methacrylic acid.

" Mom M. SAFFORD. 

